cvelistv5 - cve-2025-20143

cve-2025-20143

Vulnerability from cvelistv5

Published

2025-03-12 16:12

Modified

2025-03-14 15:31

Severity ?

6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS score ?

0.01% (0.00975)

Summary

A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device. This vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system. Note: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

References

▼	URL	Tags
	psirt@cisco.com	https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Version: 6.5.3 Version: 6.5.2 Version: 6.5.92 Version: 6.5.1 Version: 6.5.15 Version: 6.6.2 Version: 7.0.1 Version: 6.6.25 Version: 6.6.1 Version: 6.6.11 Version: 6.5.93 Version: 6.6.12 Version: 7.0.0 Version: 7.1.1 Version: 7.0.90 Version: 6.6.3 Version: 6.7.1 Version: 7.0.2 Version: 7.1.15 Version: 7.2.0 Version: 7.2.1 Version: 7.1.2 Version: 6.7.2 Version: 7.1.25 Version: 6.6.4 Version: 7.3.1 Version: 7.1.3 Version: 6.7.3 Version: 7.4.1 Version: 7.2.2 Version: 6.8.1 Version: 7.4.15 Version: 7.3.2 Version: 7.5.1 Version: 7.4.16 Version: 7.3.27 Version: 7.6.1 Version: 7.5.2 Version: 7.6.15 Version: 7.3.3 Version: 7.7.1 Version: 6.8.2 Version: 7.4.2 Version: 7.3.4 Version: 6.7.35 Version: 6.9.1 Version: 7.6.2 Version: 7.8.1 Version: 7.5.3 Version: 7.7.2 Version: 6.9.2 Version: 7.8.2 Version: 7.5.4 Version: 7.8.22 Version: 7.7.21 Version: 7.3.5 Version: 7.5.5 Version: 7.3.6 Version: 7.8.23

Show details on NVD website

JSON

To clipboard

{
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                     content: {
                        id: "CVE-2025-20143",
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                        timestamp: "2025-03-13T03:55:22.156936Z",
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                  {
                     status: "affected",
                     version: "6.5.93",
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                     status: "affected",
                     version: "6.6.12",
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                     status: "affected",
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                     status: "affected",
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                     status: "affected",
                     version: "6.6.3",
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                     version: "7.1.15",
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                     version: "7.2.0",
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                     status: "affected",
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                     status: "affected",
                     version: "6.6.4",
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                     status: "affected",
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                     status: "affected",
                     version: "7.1.3",
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                     status: "affected",
                     version: "6.7.3",
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                     version: "7.4.1",
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                     status: "affected",
                     version: "7.6.1",
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                     status: "affected",
                     version: "7.5.2",
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                     status: "affected",
                     version: "7.6.15",
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                     status: "affected",
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                     status: "affected",
                     version: "7.7.1",
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                     status: "affected",
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                     status: "affected",
                     version: "7.4.2",
                  },
                  {
                     status: "affected",
                     version: "7.3.4",
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                     status: "affected",
                     version: "6.7.35",
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                     status: "affected",
                     version: "6.9.1",
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                     status: "affected",
                     version: "7.6.2",
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                     status: "affected",
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                     version: "7.8.22",
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         descriptions: [
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               lang: "en",
               value: "A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\r\n\r\nThis vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.\r\nNote: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature.\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.",
            },
         ],
         exploits: [
            {
               lang: "en",
               value: "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
            },
         ],
         metrics: [
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                  attackVector: "LOCAL",
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                  baseScore: 6.7,
                  baseSeverity: "MEDIUM",
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                  integrityImpact: "HIGH",
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         },
         references: [
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               name: "cisco-sa-sb-lkm-zNErZjbZ",
               url: "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ",
            },
            {
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            ],
            discovery: "INTERNAL",
         },
         title: "Cisco IOS XR Software Secure Boot Bypass Vulnerability",
      },
   },
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      state: "PUBLISHED",
   },
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   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
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      vulnrichment: {
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\"affected\", \"version\": \"7.8.2\"}, {\"status\": \"affected\", \"version\": \"7.5.4\"}, {\"status\": \"affected\", \"version\": \"7.8.22\"}, {\"status\": \"affected\", \"version\": \"7.7.21\"}, {\"status\": \"affected\", \"version\": \"7.3.5\"}, {\"status\": \"affected\", \"version\": \"7.5.5\"}, {\"status\": \"affected\", \"version\": \"7.3.6\"}, {\"status\": \"affected\", \"version\": \"7.8.23\"}], \"defaultStatus\": \"unknown\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.\"}], \"references\": [{\"url\": \"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ\", \"name\": \"cisco-sa-sb-lkm-zNErZjbZ\"}, {\"url\": \"https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/\", \"name\": \"Crafting endless AS-PATHS in BGP\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\\r\\n\\r\\nThis vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.\\r\\nNote: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature.\\r\\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"cwe\", \"cweId\": \"CWE-347\", \"description\": \"Improper Verification of Cryptographic Signature\"}]}], \"providerMetadata\": {\"orgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"shortName\": \"cisco\", \"dateUpdated\": \"2025-03-12T16:12:31.135Z\"}}}",
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}

ghsa-2w36-grgh-xprc

Vulnerability from github

Published

2025-03-12 18:32

Modified

2025-03-12 18:32

Severity ?

6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Details

This vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system. Note: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Show details on source website

JSON

To clipboard

{
   affected: [],
   aliases: [
      "CVE-2025-20143",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-347",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2025-03-12T16:15:21Z",
      severity: "MODERATE",
   },
   details: "A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\n\nThis vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.\nNote: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature.\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.",
   id: "GHSA-2w36-grgh-xprc",
   modified: "2025-03-12T18:32:53Z",
   published: "2025-03-12T18:32:52Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2025-20143",
      },
      {
         type: "WEB",
         url: "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp",
      },
      {
         type: "WEB",
         url: "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
}

cisco-sa-sb-lkm-znerzjbz

Vulnerability from csaf_cisco

Published

2025-03-12 16:00

Modified

2025-03-12 16:00

Summary

Cisco IOS XR Software Secure Boot Bypass Vulnerability

Notes

Summary

Vulnerable Products

This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco IOS XR Software, regardless of device configuration: ASR 9000 Series Aggregation Services Routers (64-bit) IOS XRv 9000 Routers Network Convergence System (NCS) 540 Series Routers that are running an NCS540-iosxr base image NCS 560 Series Routers NCS 1000 Series NCS 5000 Series Routers NCS 5500 Series Routers For information about which Cisco software releases are vulnerable, see the Fixed Software ["#fs"] section of this advisory.

Products Confirmed Not Vulnerable

Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect the following Cisco products: IOS Software IOS XE Software NX-OS Software

Workarounds

There are no workarounds that address this vulnerability.

Fixed Software

Cisco has released free software updates ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/end-user-license-agreement.html ["https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"] Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. The Cisco Support and Downloads page ["https://www.cisco.com/c/en/us/support/index.html"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool. When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Customers Without Service Contracts Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"] Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Fixed Releases In the following table, the left column lists Cisco software releases or trains. The right column indicates whether a release (train) is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. Cisco IOS XR Software Release First Fixed Release 7.8 and earlier Migrate to a fixed release. 7.9 7.9.1 7.10 and later Not affected. Note: Cisco will not release SMUs to address this vulnerability. The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

Vulnerability Policy

To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Source

This vulnerability was found during internal security testing.

Legal Disclaimer

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.

JSON

To clipboard

{
   document: {
      acknowledgments: [
         {
            summary: "This vulnerability was found during internal security testing.",
         },
      ],
      category: "csaf_security_advisory",
      csaf_version: "2.0",
      notes: [
         {
            category: "summary",
            text: "A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\r\n\r\nThis vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.\r\n\r\nNote: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the March 2025 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2025 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75548\"].",
            title: "Summary",
         },
         {
            category: "general",
            text: "This vulnerability affects the following Cisco products if they are running a vulnerable release of Cisco IOS XR Software, regardless of device configuration:\r\n\r\nASR 9000 Series Aggregation Services Routers (64-bit)\r\nIOS XRv 9000 Routers\r\nNetwork Convergence System (NCS) 540 Series Routers that are running an NCS540-iosxr base image\r\nNCS 560 Series Routers\r\nNCS 1000 Series\r\nNCS 5000 Series Routers\r\nNCS 5500 Series Routers\r\n\r\nFor information about which Cisco software releases are vulnerable, see the Fixed Software [\"#fs\"] section of this advisory.",
            title: "Vulnerable Products",
         },
         {
            category: "general",
            text: "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XE Software\r\nNX-OS Software",
            title: "Products Confirmed Not Vulnerable",
         },
         {
            category: "general",
            text: "There are no workarounds that address this vulnerability.",
            title: "Workarounds",
         },
         {
            category: "general",
            text: "Cisco has released free software updates [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu\"] that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.\r\n\r\nCustomers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nThe Cisco Support and Downloads page [\"https://www.cisco.com/c/en/us/support/index.html\"] on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n  Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n      Fixed Releases\r\nIn the following table, the left column lists Cisco software releases or trains. The right column indicates whether a release (train) is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability.\r\n          Cisco IOS XR Software Release  First Fixed Release          7.8 and earlier  Migrate to a fixed release.      7.9  7.9.1      7.10 and later  Not affected.\r\nNote: Cisco will not release SMUs to address this vulnerability.\r\n\r\nThe Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.",
            title: "Fixed Software",
         },
         {
            category: "general",
            text: "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
            title: "Vulnerability Policy",
         },
         {
            category: "general",
            text: "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
            title: "Exploitation and Public Announcements",
         },
         {
            category: "general",
            text: "This vulnerability was found during internal security testing.",
            title: "Source",
         },
         {
            category: "legal_disclaimer",
            text: "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
            title: "Legal Disclaimer",
         },
      ],
      publisher: {
         category: "vendor",
         contact_details: "psirt@cisco.com",
         issuing_authority: "Cisco PSIRT",
         name: "Cisco",
         namespace: "https://wwww.cisco.com",
      },
      references: [
         {
            category: "self",
            summary: "Cisco IOS XR Software Secure Boot Bypass Vulnerability",
            url: "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ",
         },
         {
            category: "external",
            summary: "Cisco Event Response: March 2025 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication",
            url: "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75548",
         },
         {
            category: "external",
            summary: "Cisco Security Vulnerability Policy",
            url: "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html",
         },
         {
            category: "external",
            summary: "free software updates",
            url: "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#ssu",
         },
         {
            category: "external",
            summary: "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
            url: "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
         },
         {
            category: "external",
            summary: "Cisco Support and Downloads page",
            url: "https://www.cisco.com/c/en/us/support/index.html",
         },
         {
            category: "external",
            summary: "considering software upgrades",
            url: "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes",
         },
         {
            category: "external",
            summary: "Cisco Security Advisories page",
            url: "https://www.cisco.com/go/psirt",
         },
         {
            category: "external",
            summary: "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
            url: "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
         },
         {
            category: "external",
            summary: "Security Vulnerability Policy",
            url: "http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html",
         },
      ],
      title: "Cisco IOS XR Software Secure Boot Bypass Vulnerability",
      tracking: {
         current_release_date: "2025-03-12T16:00:00+00:00",
         generator: {
            date: "2025-03-12T15:55:00+00:00",
            engine: {
               name: "TVCE",
            },
         },
         id: "cisco-sa-sb-lkm-zNErZjbZ",
         initial_release_date: "2025-03-12T16:00:00+00:00",
         revision_history: [
            {
               date: "2025-03-12T15:54:39+00:00",
               number: "1.0.0",
               summary: "Initial public release.",
            },
         ],
         status: "final",
         version: "1.0.0",
      },
   },
   product_tree: {
      branches: [
         {
            branches: [
               {
                  category: "product_family",
                  name: "Cisco IOS XR Software",
                  product: {
                     name: "Cisco IOS XR Software ",
                     product_id: "CSAFPID-5834",
                  },
               },
            ],
            category: "vendor",
            name: "Cisco",
         },
      ],
   },
   vulnerabilities: [
      {
         cve: "CVE-2025-20143",
         ids: [
            {
               system_name: "Cisco Bug ID",
               text: "CSCvx66790",
            },
            {
               system_name: "Cisco Bug ID",
               text: "CSCvx66852",
            },
         ],
         notes: [
            {
               category: "other",
               text: "Complete.",
               title: "Affected Product Comprehensiveness",
            },
         ],
         product_status: {
            known_affected: [
               "CSAFPID-5834",
            ],
         },
         release_date: "2025-03-12T16:00:00+00:00",
         remediations: [
            {
               category: "vendor_fix",
               details: "Cisco has released software updates that address this vulnerability.",
               product_ids: [
                  "CSAFPID-5834",
               ],
               url: "https://software.cisco.com",
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 6.7,
                  baseSeverity: "MEDIUM",
                  vectorString: "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               products: [
                  "CSAFPID-5834",
               ],
            },
         ],
         title: "Cisco IOS XR Software Secure Boot Bypass Vulnerability",
      },
   ],
}

fkie_cve-2025-20143

Vulnerability from fkie_nvd

Published

2025-03-12 16:15

Modified

2025-03-12 16:15

Severity ?

6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Summary

References

▼	URL	Tags
	psirt@cisco.com	https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
	psirt@cisco.com	https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on an affected device. To exploit this vulnerability, the attacker must have root-system privileges on the affected device.\r\n\r\nThis vulnerability is due to insufficient verification of modules in the software load process. An attacker could exploit this vulnerability by manipulating the loaded binaries to bypass some of the integrity checks that are performed during the booting process. A successful exploit could allow the attacker to control the boot configuration, which could enable them to bypass the requirement to run Cisco-signed images or alter the security properties of the running system.\r\nNote: This vulnerability affects Cisco IOS XR Software, not the Secure Boot feature.\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.",
      },
      {
         lang: "es",
         value: "Una vulnerabilidad en el proceso de arranque del software Cisco IOS XR podría permitir que un atacante local autenticado con privilegios elevados eluda la funcionalidad de arranque seguro e instale software no verificado en un dispositivo afectado. Para explotar esta vulnerabilidad, el atacante debe tener privilegios de superusuario en el dispositivo afectado. Esta vulnerabilidad se debe a una verificación insuficiente de los módulos durante la carga del software. Un atacante podría explotarla manipulando los binarios cargados para eludir algunas de las comprobaciones de integridad que se realizan durante el arranque. Una explotación exitosa podría permitir al atacante controlar la configuración de arranque, lo que le permitiría eludir el requisito de ejecutar imágenes firmadas por Cisco o modificar las propiedades de seguridad del sistema en ejecución. Nota: Esta vulnerabilidad afecta al software Cisco IOS XR, no a la función de arranque seguro. Cisco ha publicado actualizaciones de software que solucionan esta vulnerabilidad. No existen workarounds que la solucionen.",
      },
   ],
   id: "CVE-2025-20143",
   lastModified: "2025-03-12T16:15:21.733",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "HIGH",
               baseScore: 6.7,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "HIGH",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
               version: "3.1",
            },
            exploitabilityScore: 0.8,
            impactScore: 5.9,
            source: "psirt@cisco.com",
            type: "Primary",
         },
      ],
   },
   published: "2025-03-12T16:15:21.733",
   references: [
      {
         source: "psirt@cisco.com",
         url: "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/",
      },
      {
         source: "psirt@cisco.com",
         url: "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-lkm-zNErZjbZ",
      },
   ],
   sourceIdentifier: "psirt@cisco.com",
   vulnStatus: "Awaiting Analysis",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-347",
            },
         ],
         source: "psirt@cisco.com",
         type: "Primary",
      },
   ],
}

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

cve-2025-20143

Vulnerability from cvelistv5

ghsa-2w36-grgh-xprc

Vulnerability from github

cisco-sa-sb-lkm-znerzjbz

Vulnerability from csaf_cisco

fkie_cve-2025-20143

Vulnerability from fkie_nvd

Tags

Sightings

Nomenclature